Table 1

 Characteristics of the patients groups

CharacteristicRAOAControl serum
Results are shown as mean (SD)
CRP, C reactive protein; RF, rheumatoid factor.
Age (years)53 (13.7)76.8 (10)47.5 (11.9)
Male/female3/123/89/6
Disease duration (years)6.7 (6.3)5.2 (2.5)
CRP (mg/l)28.9 (23.7)3 (3.4)
RF positive11 of 15